Stop motion for looms



Sept. 11, 1934- M. B. PENMAN ET AL 1,973,654

sToP MOTION FOR LooMs Filed March 16, 1954 7 Sheets-Sheet l STOP MOTION FOR LOOMS Filed Marh 16, 1934 '7 Sheets-Sheet 2 'III 'mum 'M .mlmlllw MLLM Sept. 11,v 1934. M B. PENMAN Em. 1,973,654

STOP MOTION FOR LOOMs Filed March 16, 1934 '7 Sheets-Sheet C5 Sept. 11, 1934. M. B. PENMAN ET AL STOP MOTION FOR LOOMS '7 Sheets-Sheet 4 Filed March 16, 1934 Ill" SePt- 1.15 1934- M. B. PENMAN x-:T A1. 1,973,654

STOP MOTION FOR LOOMS Filed March 16, 1954 7 Sheets-Sheet 5 f El.; L Tllnuunnu 4 nvnl sept.l 11, 1934.

M. B. PENMAN xA-:T AL

STOP` MOTION FOR LOOMS '7 Sheets-Sheet 6 Filed March 16, 1934 Sept. 11, 1934- M. B. PENMAN ET AL STOP MOTION FOR LOOMS Filed March 16, 1954 Patented Sept. 11, 1934 UNITED sixrlis PATE-NT AOFFICE'.

s'rorv MoTIoN Foa LooMs Applicaticn March 16, 1934, serian No. 715,944 p 1s claims. (01.139-336) This invention relates to stop motions for looms. and particularly looms for weaving oarpets of the Axminster type, wherein, for each transverse course of pile tufts included in a single repeat of the pattern to be woven into the fabric, a spool having a yarn Wound thereonfor each pile tuft of the course represented by the spool is provided; and wherein each spool is carried by a' frame having a feed tube for each of the tuft yarns on the spool, each tube frame in turn being carried by a pairy of endless chains which pass through circuitous paths and convey the tube frames successively to a predetermined position in the loom at which the newly rpositioned tube frame is removed from the carrier.

chains by a pair of grippers which are adapted to register with the opposite ends of the frame, the grippers being mounted and operated to carry the released frame to a position adjacent the warp in the loom or the fell of the fabric, for laying the tuft yarns of the spool in predetermined positions in the open warp shed, in order that .the tufts may be tied into the fabric by filling or weft threads inserted in the open warp shed by a needleV operable across the warp within the open shed, and to return the frame to position on the carrier chains.

The present invention concerns the provision of means for detecting abnormal conditions arising during the weaving operations which heretofore have been responsible for considerable damage being done to the mechanisms ofthe loom and which are generally known to the trade as smashes.

VThe present invention further concerns the incoporation with the detecting means above referred to of a system of signals audible or visible or a combination of both by which the weaver may readily determine the location in the loom of the prevailing abnormal'condition.

The present invention further concerns the incorporation, with the detecting mechanisms and the signalling system above referred to of an automatic mechanism common to all of the above noted detecting mechanisms and operable by any single one thereof for stopping the loom immediately upon detection of an abnormal condition, whereby the production of the above noted smashes is avoided.

The present application constitutes a continuation in part of a parent application of the present applicants. Serial No. 666,166, filed March 9, 1933, particularly concerns the means for detecting the misplacement of one or more of the tubeframes from the carrier chains.

'The construction and operation of the detecting, signalling and stop-effecting mechanisms, above referred to and the cooperation of these mechanisms with the ordinary elements of a loom of the type noted insofar as the present application is concerned will be more fully disclosed hereinafter. reference being had to the accom--l panying drawings, of which.:

Fig. l is a side elevation of the front portion of a loom ofthe type noted, showing the location of a portion of the mechanism of the present invention incorporated with the ordinary elements of the loom: K f Y l Y Figs. 2a and 2b constitute a skeleton side elevation .of the framework of the loom, forillustrating the. circuitous path traveled by theV carrier chains for the tube frames and tuft yarn spools respectively associated therewith;

Fig. 3 is a rear elevation of the mechanism shown in Fig. 2b;

Fig. 4 is a plan View of the mechanism shown in Fig. 2b; Fig. 5 is a perspective View of a switch associated with detectingY means for and operable by a tuft spool or tube frame displaced from its normal position on the carrier chains in a horizontal run of the chains at the top of the supporting frame; Y, i Fig. 6 illustrates a detail of the switch shown in Fig. 5; v

Fig.A 'l is a perspective view of a contact element engageable by a tuft spool andtube frame dislodged froin a vertical run or bottom turn of the carrier chains; Figs. 8 and 9 respectively are perspective views ofl detecting means for dislocated spools in the vertical runs of the carrier chains;

Fig. 10 is a wiring diagram showing the manner of' connecting the detector switches, the master switch, the yclutch-releasing mechanism and the signals with a source of electric energy.

The loom shown in the drawings for the purpose of illustrating the principles ofthe present invention is of the type generally known as a Crompton and Knowles Axminster loom and as shown in Figs. l, 2a. and 2b comprises the usual right side main frame l and left side main frame 2, whichare integrally connected by the usual transverse frame members 3, 3. Y

Extending rearwardly from the mainv fde frames 1 and 2, see Figs. 2a and 2b, are supplemental side frames or racks 1a and 2a respectively which provide the necessary support for the carrier chains 40, 40 to which the tube frames 50, 50 are detachably secured. A Y

ica

'Ihe side chains 40, 40 are supported in an upper horizontal run 41 by sprockets 42, 42 mounted on shafts 43, 43 carried by the supplemental side frames la and 2d respectively. Below the upper run 41, the side chains 40, are arranged in a series of short vertical runs 44 and a series of relatively longer vertical runs 45 which, together with the upper horizontal run 41, form a circuitous path to be traveled by carrier chains 40 and tube frames 50, whereby the said tube frames are conveyed successively to a position A located substantially above the fell of the fabric, adjacent the rear edge of the breast beam 16.

The carrier chains 40, 40 are advanced intermittently by the main shaft 15 through the usual pawl and ratchet mechanism 51, shown in Fig. 1, which intermittently rotates the shaft 52 at the lower end of the front vertical run vof the carrier chains, said shaft 52 being rotatably mounted in bearings 53 carried by an arch beam 54 which is secured at its opposite ends to the main side frames 1 and 2 respectively.

Carried by each of the tube frames 50, see Fig.V

1, is the usual tuftyarn spool 55, on which the tuft yarns are wound, said tuft yarns passing from the spool 55 in the usual manner through the feed tubes 55a carried by the tube frame 50 and from which the free ends w1 of the tuft yarns extend.

As usual in this type of loom, each tube frame 50, as it is moved to position A, it indexes or registers with a pair of jaws or grippers which are disposed respectively at the opposite sides of the loom and whichare carried on the outer ends of horizontally rockable arms which in turn are carried on vertically rockable arms-which form parts of a transversely extending rockingframe,

Y The gripper arms are rst rocked inwardly in opposite directions into registry with the opposite ends of the tube frame 5G at position A, where the said grippers register with the tube frame and at the same time release the frame from the carrier chains 40, 40 in the usual manner, whereupon the rocker frame is rocked to lower the grippers and the tube frame held thereby to the. tuftforming position; whereuponV the grippers and the tube frame 50 carried thereby are rocked and the projecting ends w1 of the tuftyarn w are laid in the open warp shed, substantially at the fell of the fabric. While in this position a weft or filling thread is passed through the open warp shed in the :usual manner by the filling. needle operable by the usual rope drum actuated in the usual manner from themain shaft of the loom; The lay of the loom is then rocked in the usual manner to beat the newly inserted filling thread and the engaged ends w1 of the tuft yarns in the position at the fell of the fabric, afterwhich the tufts formed by the said projecting ends w1 of the tuft yarns are severed from the tuft yarns, adjacent the lower ends of the feed tubes a through which the tuft yarns extend, the severing of the tufts from the tuft yarns belngaccomplished in the usual manner by a laterally reciprocating blade and a cooperating laterally oscillating blade operated in the usualmanner in timed relation with the other elements of the loom.

vThe above general description and operation of the elements of a loom of the -type noted will be sufficient for a clear understanding of the utility and operation of the mechanisms of the stop motion forming the subject of the present invention.

The causes for the expensive smashes above referred to are frequently dueto the displacement of a tuft yarn spool from its associated tube frame or accidental displacement of the tube frame from the carrier chains at any point along the upper horizontal run of the carrier chains in the circuitous path traveled jointly by the chains and tube frames, and/or the displacement 01"',a tutt yarn spoolfrom its associated tube framefor displacement of the tube frame and spool as a whole from the carrier chains in one of the vertical runs included in the circuitous path traveled by the chains and tube frames.

The present invention concerns the provision of suitable detectors for the conditions above noted. These detecting mechanisms are each provided with a switch connected in electric circuit with an automatic clutch release unit by which immediate stopping of the loom is effected upon detection of either of the conditions noted above. Also included in the electric circuit is a pair of signals by which the weaver may readily determine the location of the trouble or existance of tl e condition which caused the stoppingof the loom, the. electric circuit beingv under Acontrol of a master switch which is act-uatedby, in the present instance, the main clutch lever of the loom.

The master switch 140, see Fig. 10, comprises a 1".

casing secured in fixed position to the frame of the loom. Mounted within the casing is a base plate composed of insulating material. Secured to the base plate is a Vpair of bearings in which is rotatably mounted, in the present instance, a

round metallic bar or shaft 144 which forms the main rotatable contact of the master switch. VBetween the bearings oneside of the bar is cut away toy provide. a seat fora semicircular insulating block 145. The switch bar 144Yis provided -with an yextension which passesthrough an opening in the side of the casing which is of such a diameter as not to contact with the extension of the said switch bar.

Secured to the extension outside the a lever composedof ber or other insulating rna terial. The outer end of the lever is connected to an arm secured to and comprising an extension of the clutch lever. c

VSecured to the base block is an insulating strip to which is secured a series of electrical contacts 151, 152 and 153, the free ends of said ccntacts bearing normally, while the loom is running, on the metallic portion of the switch bar 144.

casing is 3,-;

yAs shown in Fig. l0, the contact 151 is kcones nected by a conductor 171 to one side of the coil of the automatic clutch release unit 117, the opv-A posite Vside of said coil being connected by a conductor 176 to one side 169 of a main electric circuit, in the present instance a circuit connected 1 to the secondary winding of a suitable transformer 168. The second side 16'? of the secondary circuit, coming from the transformer 168, is preferably grounded on the frame of the loorrnfor purposes hereinafter noted, whereby all the metallic elements of the loom not .otherwise insulated forinthe one side 167 of the secondary circuit of the transformer. f l At such time as the automatic clutch release 117 is operated to release the clutch, the clutch lever rocks the switch bar 144 thereby bringing the insulating block 145 into contact with the electric contacts 151,k 152 and 153 of the master switch for purposes hereinafter described.

The side 169 of the secondary circuit of the transformer 16S is connected to one side of each 'n side of the signal or.pilotlight` ais connectedrby u a conductor 166 directly to the frame of the ma.- chine, forming the second side 167 of the circuit, whereby the light a, which is preferably colored, for example green, burns constantly, indicating to the weaver that current is flowing through the secondary circuit of the transformer to the various detector mechanisms. Y

The contact 152 of the master switch 140 is connected by a conductor 172 to one side of a switch 185, see Figs. 2b, 4, 5 and 6, which is adapted to close the circuit and eifect energizati'on of the coil of the automatic clutch release 117 for stopping the loom in event of the displacement of a tuft yarn spool from its associated tube frame, or the displacement of the tube frame itself from the carrier chains 40 at any place along the upper horizontal run 4l of said chain.

The switch 185 illustrated in detail in Figs. 5 and 6 comprises a metallic strip 186 to one end of which is secured one end of a wire or other flexible element 187, the opposite end of such flexible element being anchored to a transversely extending bar 188 at the rear end of the upper run 41 of the chain 40.

Rigidly mounted on the metallic strip 186 by rivets 186a,see Fig. 6, is an insulating strip 189 having a Abinding post 190 to which is secured one end of a coiled springy 191. To the opposite end of: the spring 191is secured a contact 192 which is connected byan insulating strip 193, which passes through an opening 194 formed in a right angle projection 195 of the metallic strip 186, to one end of a second flexible element in the form of a wire 196, the opposite end of which is anchored toa transversely extending bar 197 located at the forward end of the upper run 41 of the carrier chains 40. The iiexible elements 187 and 196, with the switch 185, constitute a detector for misplaced tube frames or tuft spools in the upper run 41 of the chain.

Intermediate the anchorages 188 and 197 the wires 187 and 196 rest on the transversely extending shafts 43 which support the sprockets 42 for the chains 40 in the said upper run 41 of said chain.

As shown in Fig. 4, there are four of these detectors spaced laterally across the chain and spool racks provided by the supplementary frames 1a and 2a. Each detector includes one of the switches 185. The metallic strips 186 of the series of switches 185 are all connected by a conductor 172 to each other and to the contact element 152 of the master switch 140.

The binding posts 190 of the switches 185, 185 are connected together and to the side 167 of the transformer secondary circuit through the frame of the machine by a conductor 172e, as illustrated in Fig. 4.

The second side of the signal light b is connected by a conductor 172D to the conductor 172.

TheY dropping of a spool or tube frame from the carrier chains 40 on to the detector comprising an associated pair of the taut wires 187 and 186 causes these wires to sag, intermediate the supports therefor, to such an extent that the spring 191 of at least one of the switches 185 is extended to such an extent that the contact element 192 engages the contact element 195 of the switch, thereby closing the circuit between the conductors 172 and 172e, permitting current to flow through the contact 152 of the master switch 140, through the contact 144 of the said master switch and through the contact 151 of said master switch to the automatic clutch release unit 117, whereby the main clutch is released andthe loom is brought to a stop immediately by application of a brake band to a drum on the main drive shaft of the loom. At the same time, current iiows through the conductor 172D causing the signal light b to be lighted, indicating to the weaver that the cause of the loom stopping Will be found at some point along the upper run 41 of the carrier chains 40.

Substantially parallel to each of the short vertical runs 44; and to the long vertical runs 45 of the conveyer chains 40, see Figs. 2a and 2b, is disposed a contact element, in the present instance in the form of a wire 200.

Parallel to the front vertical runs of the carrierchains 40, which guide the tube-spool framesv 50 to and from the registery position A, and ex-V tending substantially around the lower turns of the chains at the registery position A are a pair of shoes 201,202 which are electrically connected by a conductor 203, said shoes being suitably insulated from the frame of the loom and electrically connected by a conductor 204 to the contact element 200 paralleling the second vertical run .of the carrier chains 40. rEhe contact elements 200 paralleling .the second and third vertical runs of the carrier chains are connected by a short horizontal contact element 200a.

' The contact element 200, 200er are supported at their upper ends by insulating blocks 205 mounted on the transversely extending shafts 206 which support the sprockets 207 around which the carrier chains 40 pass. Y

The lower ends of the contact elements or wires 200 are connected to contact strips 208 which are substantially concentric with the centers of the shafts 209 which support the sprockets 210 around which the carrier chains 40 pass at the lower turns between the vertical runs 44 of said carrier chains. The contact strips 208 are supported by insulating blocks or bars 211 which are carried by the supplementary framework of the loom.

The contact wires 200 paralleling the long vertical runs 45 of the carrier chains are secured at their lower end to longitudinally extending contact bars 212, which are supported in insulating blocks or bars 213 supported by the supplementary framework of the loom.

The contact wire 200 paralleling the rearmost vertical run of the carrier chains is supported at its upper end by aninsulating block or bar 214 securedk to the supplementary framework, the upper end of said rearmost contact wire 200 being connected by a conductor 215 to a similar wire, or series of electrically connected contact wires and. strips, at the opposite side of the supple- 130 mentary framework. The contact wires 200 paralleling vertical runs of the carrier chains intermediate the short runs 44 and long runs 45 are connected by a conductor 216.

In this manner an electric contact wire or 135 contact strip extends in substantially parallel spaced relation to each of the carrier chains, and the tube frames and tuft yarn spools supported thereby, at each side of the loom, throughout the entire circuitous'path traveled thereby. At any 14@ point throughout this circuitous path should one or both ends of a tube frame become dislodged from either of thecarrier chains in one of the vertical runs of the chains 40, 40, such dislodged member will tend to drop and in so doing will 145 strike a tube frame or spool at a relatively lower level in the vertical run which will deflect the displaced member from its course into contact with either ofthe shoes` 201, 202, the contact wires 200 and 200a, the contact strips 208 or the 150 contact bars 212, which in anygevent willcomplete a circuit through the engaged one of these contact elements to the tube frame with which the falling displaced member engages, which completes the circuit through the metallic ele,- ments of the loom to the side 167 of the secondary circuit of the transformer 168, whereby the current will pass through the conductor 173 (see Figs. 2a and 10) by which the contact members are connected with the contact element 153 of the master switch 140, said current then passing through the contact elements 144 and 151 to and through the coil of the automatic clutch release unit 117 and the conductor 170 tothe side 169 of the secondary circuit, whereby the unit 117 will be operated to release the clutch and effect application of the brake inthe manner above noted. At the same time current will flow through the conductor 1731) and through the signal light c indicating to the weaver that the condition causing the stoppage of the loom may be found in one of the vertical runs of the carrier chains.

Should .one ofthe spools become dislodged from its associated tube frame in any of the Vertical runs of the carrying chains 40, 40, the dislodged spool will fall in a direction away from` the contact wires 200 and for the purpose of detecting the dislodgrnent of a spool from its frame a series of wires Gb are provided at the bottoms of the vertical runs. rlhe wires 20Gb extend transversely of the machine, see Fig. 8, and are electrically connected at their opposite ends to the oppositely disposed side frames of the machine. EX-- tending parallel to the wires 2001 but electrically insulated from the frame of the machine `are wires 260e, which are electrically connected to the con ductor 173.

When a spool drops its end flanges will complete the circuit between the wires 20Gb and 260e, thereby actuating the stop-eiecting unit 117 and the signal light c in the manner noted above.

If desired, the wires 20Gb may be replaced by a trough 20M, see Fig. 9, which will functionA in the same manner as the two wires 20Gb, 20017.

Upon referring to the electric diagram shown in Fig. 10, it will be obvious that when current is caused to flow through either of the conductors 172 or 173, such current will fiow through the contact element of the master switch 140 to which the particular conductor is connected'- The current will then ow through the metallic portion 144: of the rotary contact element of the master switch 140 into the contact 151 of said master switch and through the coils of the automatic clutch release unit 117 which will remain energized as long as theparticular detector circuit remainsclosed. Incidently the current will flow through the contacts 152 and 153 of the master switch 149, by reason of their engagement with the rotary Contact element 144, which will cause the signal lights b and c to be lighted.

In order to cut out the signal light that is not desired, leaving lighted only that signal light which is indicating the source of the trouble, and to affect deenergization of the coils of the automatic clutch release unit 117 the rotary switch element 14e-1415 is rotated, immediately upon release of the main clutch, to bring the insulating portion 145 of said rotary switch element into contact with the contacts 151, 152 and 153, whereby the coils of the unit 117 are deenergized and the current is shut off from the one signal light and leaving the one included in the circuit of the detector which has been operated to, stop the loom remaining lit as long as the detector switch connected in series therewith, across the sides 167 and 169 of the secondary circuit of the transformer 168, remains closed.

Correction of the trouble which has caused the stopping of the loom, and the opening of the de- 'tector switch which indicated such trouble, again clears the .circuit'for subsequent operation of the loom, the loom again being started by manually moving the clutch shift rod to the right until engaged and held by the unit 117.

While a pilot light a is shown in Fig. 10 to indicate the presence of electric energy in the circuits including the detector switches, this light is not necessary to the functioning of the stop motion as a whole and may be eliminated when not desired.

The foregoing description is restricted to the disclosure of the above noted parent application, whereas the drawings of the present case show a contact wire 200 paralleling the foremost run of each of the carrier chains 40 as these chains pass from the shoes 201 at station A to the top horizontal run 41 of the carrier chains, said Wires being supported by and insulated from the supplementary frames la and 2a, through suitable arms carried by said supplemental frames. These wires may be'electrically connected-to therest Of the contact wires 200 in any suitable manner, as, for example, by having the lower ends of the wires secured to the shoes 201, as shown in Fig. 2a.

We claim:

1. A stop motion for looms employing a plurality of yarn spool and spool-supporting elements carried by means for conveying said elements in predetermined order along a predetermined path, in combination with means for effecting stopping of said loom, and means responsive to displacef ment of any of said conveyer` carried elements from its ordered position on said conveying means while travelincr along and throughout the whole of said path for actuating said stop-erfecting means.

2. In a stop motion for a loom employing a plurality of yarn spool and spool-supporting elements carried by a conveyer adapted to travel in a circuitous path, in combination with electrically operable means for stopping the loom, and circuit control means including a displaced conveyer carried element adapted to govern the flow of electric energy in said circuit for actuating said electrically operable means.

3. In a stop motion for a loom employing a plurality of yarn spool and spool-supporting elements carried by a conveyer adapted to travel in a circuitous path including a substantially horizontal run, in combination with electrically operable means for stopping said loom, and means responsive to displacement of any of said conveyer carried elements from said horizontal run adapted to govern the iiow of electric energy in said circuit for actuating said electrically operable means.

4. In a stop motion for a loom employing a plurality ofA yarn Spool and spool-supporting elements carried by a conveyer arranged to travel in a circuitous path including substantially hori-n zontal and vertical runs, in combination with means for detecting displacement of conveyer carried elements from the horizontal run, means for detecting displacement of conveyer carried elements from said vertical runs, said detecting means respectively including a circuit-controlling element, a master switch common to both said circuit-controlling elements, and an electrically operable stop-effecting device in circuit with said master switchand said controlling elements for stopping said loom by displacement responsive action of either of said controllingelements.l

5. In a stop motion for a loom employing a plurality of yarnv spool and spool-supporting elements carried by a conveyer arranged vto travel in a circuitous path including'substantially horizontal and vertical runs, incombination with means for detecting displacement of conveyer carried elements from the horizontal run, means for detecting displacement of conveyer carried elements from said vertical runs, said detecting means respectively including a circuit-controlling element, a master switch common to both said circuit-controlling elements,v an electrically operable stop-effecting device in circuit with said master switch and said circuit-controlling elements for stopping said loom by displacement responsive action of either of said controlling elements, and a signal for and individually connected in circuit with each controlling element and said master switch and controlled by the latter.

6. In a stop motion for a loom employing a plurality of yarn spool and spool-supporting elements carried by a conveyer arranged to travel in a circuitous path including substantially horizontal and vertical runs, in combination with means for detecting displacement of conveyer' carried elements from the horizontal run, means for detecting displacement of conveyer carried elements from said vertical runs, said detecting means respectively including a circuit-controlling element, a master switch common to both said circuit-controlling elements, an electrically operable stopeiecting device in circuit with said master switch, and said circuit-controlling elements for stopping said loom by displacement responsive action of either of said controlling elements, a signal for and individually connected in circuit with each controlling element and said master switch and controlled by the latter, and means operable by said stop-effecting device for controlling said master switch.

7. In a stop motion for looms employing tube frame and yarn spool elements carried through a circuitous path including substantially horizontal and vertical runs by a pair of laterally spaced conveyers, an electrically operable device for eiiecting stopping of the loom, and means extending substantially parallel to predetermined portions of said runs arranged to be engaged by any one of said conveyer-carried elements when displaced from said conveyers for controlling an electric circuit including said device in a manner to effect stopping of said loom.

8. In a stop motion for looms employing tube frame and yarn spool elements carried through a circuitous path including substantiallyl horizontal and vertical runs by a pair of laterally spaced conveyers, an electrically operable device for effecting stopping of the loom, means extending substantially parallel to predetermined portions of said runs, and means disposed at the lower ends of said vertical runs arranged to be engaged by any one of said conveyercarried elements when displaced from said conveyers for controlling an electric circuit including said device in a manner to eiect stopping of said loom. Y Y

9. In a stop motion for looms employing tube frame and yarn spool elements carried through a circuitous path including a substantially horizontal run by a pair of laterally spaced conveyers respectively supporting the opposite ends of said tube frames, an electrically operable device for effecting stopping of the loom, a normally open switch, means connected to relatively movable portions of said switch respectively and anchored rigidly adjacent the opposite ends respectively of said horizontal run to be engaged by one of said conveyer-carried elements when one 'end of the same is displaced from its conveyer, 'for .closing said switch and completing` the circuit through said device for stopping the loom.

10. In a stop motion for looms employing tube frame and yarn spool elements carried through a circuitous path including substantially horizontal and vertical runs by a pair of laterally spaced conveyers respectively supporting the opposite ends of said tube frames, an electrically operable device for effecting stopping of said loomv by displacement of one of said conveyercarried elements from one of said conveyers, means electrically connecting one side of said device with said conveyers, and contact wires substantially paralleling said vertical runs and connected in electric circuit with the second side of said device, said displaced element completing said circuit between the conveyers and said wires for operating said device to stop said loom.

11. In a stop motion for looms employing tube frame and yarn spool elements carried through a circuitous path including substantially horizontal and vertical runs by a pair of laterally spaced conveyers respectively supporting the opposite ends of said tube frames, an electrically operable device for effecting stopping of said loom by displacement of one of said conveyercarried elements from one of said conveyers, means electrically connecting one side of said device with said conveyers, and contact wires stretched transversely between said conveyers at the lower ends of said vertical runs and con- ,115

nected in electric circuit with the second side of said device, said displaced element completing said circuit between the conveyers and said wires for operating said device to stop said loom.

12. In a stop motion for looms employing tube frame and yarn spool elements carried through a circuitous path including substantially horizontal and vertical runs by a pair of laterally spaced conveyers, an electrically operable device for effecting stopping of the loom, means forming electrical connection between said conveyers and one side of said device, contact wires paralleling said vertical runs and contact wires stretched between said conveyers at the lower ends of said vertical runs with all of said contact wires electrically connected to the second side` of said device and adapted to be engaged by one of said elements when displaced from one ofv said conveyersto complete said circuit and operate said device for stopping the loom.

13. In a stop motion for looms employing tube frame and yarn spool elements carried through a circuitous path including substantially horizontal and vertical runs by a pair of laterally spaced conveyers, an electrically operable device l for effecting stopping of the loom, means forming electrical connection between said conveyers and one side of said device, contact wires paralleling said vertical runs and contact wires stretched between said conveyers at the lowerr ends of said vertical runs with all of said "con- Y tact wires electrically connected to the second side of said device and adapted to be engaged by one or" said elements when displaced from one of' said conveyers in one of said vertical;

horizontal run to be closed by contact of a displaced element from the conveyers in said horizontal run for completing the circuit to said device for stopping the loom.

MONTGOMERY B. PEMAN. HARRISBURG TRUST COMPANY,

f By EDWIN KEISTER, Y

A Vice President and Trust Ocer. ,Executors of the Estate of Alfred F.

M cCoZlum, deceased, 

